This innovative TERO AK4 flights are new patent system from CUESOUL,well-designed built-in spring telescopic and rotation combo system(combine with AK4 flights)
The AK4 dart flights should be combined with AK7 dart stem/shaft
This innovative TERO AK4 flights are new patent system from CUESOUL,well-designed built-in spring telescopic and rotation combo system(combine with AK4 flights)
The AK4 dart flights should be combined with AK7 dart stem/shaft